CN210996127U - Riveting mechanism and riveting sleeve - Google Patents

Abstract

A riveting mechanism and a riveting sleeve are provided, the riveting mechanism is used for riveting a pipeline and a joint sleeved outside the pipeline and comprises a riveting sleeve and an extrusion piece, a plurality of riveting heads are arranged on the riveting sleeve and protrude out of one end of the riveting sleeve along the axial direction of the riveting sleeve, the riveting heads are arranged at intervals along the circumferential direction of the riveting sleeve, and the riveting heads are used for being inserted into the pipeline; the extrusion piece is inserted into the riveting sleeve and is in sliding fit with the riveting sleeve; when the extrusion slides relative to the riveting sleeve, the extrusion drives the plurality of riveting heads to expand outwards to extrude the pipeline and deform the pipeline, so that the pipeline and the joints are riveted. The axial force that the pipeline received in the riveting process is little, and is not fragile.

Description

Riveting mechanism and riveting sleeve

Technical Field

The utility model relates to a pipe connection technical field particularly, relates to a riveting mechanism and riveting sleeve.

Background

At present, when a pipeline is riveted with a joint, an annular limiting convex part is arranged on the outer peripheral surface of the pipeline, the joint is sleeved outside the pipeline, one side of the joint is abutted against the annular limiting convex part, so that the joint is limited to slide relative to the pipeline along a first direction, and the end part of the pipeline extends out of the joint. Then, a riveting column is inserted into the pipeline, the riveting column slides relative to the pipeline, so that the end part of the pipeline extending out of the joint is deformed outwards to form a bulge, the joint is limited to slide relative to the pipeline along a second direction opposite to the first direction, and finally the riveting fixation of the joint and the pipeline is realized.

Research shows that the prior pipeline and joint have the following defects in riveting and fixing:

in the riveting process, the pipeline is stressed greatly and is easy to damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a riveting mechanism, it can reduce the axial force that riveting in-process pipeline received, and the pipeline is fixed convenient, and not fragile.

The embodiment of the utility model is realized like this:

in a first aspect, an embodiment provides a riveting mechanism for riveting a pipeline and a joint sleeved outside the pipeline, the riveting mechanism includes:

the riveting sleeve is provided with a plurality of riveting heads, the plurality of riveting heads protrude out of one end of the riveting sleeve along the axial direction of the riveting sleeve, the plurality of riveting heads are distributed at intervals along the circumferential direction of the riveting sleeve, and the plurality of riveting heads are used for being inserted into a pipeline; the extrusion piece is inserted into the riveting sleeve and is in sliding fit with the riveting sleeve; when the extrusion slides relative to the riveting sleeve, the extrusion drives the plurality of riveting heads to expand outwards to extrude the pipeline and deform the pipeline, so that the pipeline and the joints are riveted.

In an optional embodiment, an included angle is formed between the inner wall of each riveting head and the central axis of the riveting sleeve, and the distance between one end of the inner wall of each riveting head, which is connected with the riveting sleeve, and the central axis of the riveting sleeve is greater than the distance between the other end of each riveting head and the central axis of the riveting sleeve; when the pressing member slides relative to the riveting sleeve, the pressing member abuts against the inner wall of the riveting head to drive the riveting head to move outwards along the radial direction of the riveting sleeve.

In an alternative embodiment, the outer walls of the rivet heads are located on the same cylindrical surface.

In an alternative embodiment, the outer wall of the rivet head is provided with a riveting projection which abuts the inner wall of the pipe when the rivet head is plugged with the pipe.

In an alternative embodiment, the riveting protrusion has two riveting surfaces opposite to the outer circumferential surface of the riveting head, the two riveting surfaces are connected and have an included angle, and the connection position of the two riveting surfaces is used for abutting against the inner wall of the pipeline.

In an alternative embodiment, the pressing piece has a guide portion having an insertion end for inserting the riveting sleeve and a trailing end opposite to the insertion end, the outer diameter of the guide portion gradually increasing from the insertion end to the trailing end; when the pressing member slides relative to the caulking sleeve, the outer wall of the guide portion abuts against the inner wall of the caulking head to drive the caulking head to move outward in the radial direction of the caulking sleeve.

In an alternative embodiment, the plurality of rivet heads enclose a space into which the extrusion member is inserted, the outer diameter of the insertion end being no greater than the inner diameter of the end of the space remote from the riveting sleeve.

In an alternative embodiment, the pressing member further includes a pressing portion connected to the guide portion, and an outer diameter of the pressing portion is not greater than an outer diameter of the trailing end of the guide portion.

In an alternative embodiment, the riveting mechanism further comprises a workbench and a driving piece, the riveting sleeve and the driving piece are both arranged on the workbench, and the driving piece is used for driving the extrusion piece to slide relative to the riveting sleeve.

The embodiment also provides a riveting sleeve, which is used for being matched with an extrusion piece to rivet a pipeline and a joint sleeved outside the pipeline, wherein the riveting sleeve is provided with a plurality of riveting heads, the plurality of riveting heads protrude out of one end of the riveting sleeve along the axial direction of the riveting sleeve, the plurality of riveting heads are arranged at intervals along the circumferential direction of the riveting sleeve, and the plurality of riveting heads are used for being inserted into the pipeline; the extrusion piece is inserted into the riveting sleeve and is in sliding fit with the riveting sleeve; when the extrusion slides relative to the riveting sleeve, the extrusion drives the plurality of riveting heads to expand outwards to extrude the pipeline and deform the pipeline, so that the pipeline and the joints are riveted.

The embodiment of the utility model provides a beneficial effect is:

to sum up, the riveting mechanism that this embodiment provided, when carrying out the riveting operation of pipeline and joint, will rivet the sleeve fixed, then will overlap the pipeline cover that is equipped with the joint and establish on riveting the sleeve, set up a plurality of riveting heads on riveting the sleeve and be located the pipeline. Then, the extrusion piece is inserted into the riveting sleeve, the extrusion piece is operated to slide relative to the riveting sleeve, so that the extrusion piece drives the riveting heads to move outwards along the radial direction of the riveting sleeve, the outer walls of the riveting heads are all in contact with the inner wall of the pipeline, and meanwhile, the riveting heads extrude the inner wall of the pipeline, so that the part of the pipeline protrudes outwards along the radial direction, and the riveting of the pipeline and the joints is completed. In the riveting process, the external force of exerting on the extruded piece transmits for the riveting sleeve, and the riveting sleeve is fixed for the pipeline, and the axial force that the riveting sleeve received the extruded piece turns into the radial force who acts on so that the riveting head radial deformation on a plurality of riveting heads, and the axial force that the pipeline received is little, and the pipeline is difficult for damaging. Meanwhile, the pipeline is stressed slightly, so that the pipeline is positioned more conveniently.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a riveting mechanism according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a riveting sleeve according to an embodiment of the present invention;

fig. 3 is a schematic view of the fitting structure of the pipe and the joint.

Icon:

001-pipe; 002-linker; 003-annular limiting convex part; 100-riveting a sleeve; 110-an insertion end; 120-tail end; 200-extrusion; 210-a guide; 300-riveting the joint; 310-riveting projections; 311-riveted interface.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 3, the present embodiment provides a riveting mechanism, which is suitable for riveting a pipe 001 and a joint 002, and in the riveting process, the pipe 001 is subjected to a small axial force and is not easily damaged. After the caulking is completed, the joint 002 is restrained on the pipe 001 and does not come off the pipe 001 from both ends of the pipe 001.

Referring to fig. 1, the riveting mechanism provided in this embodiment includes a riveting sleeve 100 and an extrusion member 200, the riveting sleeve 100 is provided with a plurality of riveting heads 300, the plurality of riveting heads 300 protrudes out of one end of the riveting sleeve 100 along an axial direction of the riveting sleeve 100, the plurality of riveting heads 300 are arranged at intervals along a circumferential direction of the riveting sleeve 100, and the plurality of riveting heads 300 are used for being inserted into a pipeline 001; extrusion 200 is for insertion into riveting sleeve 100 and is in sliding fit with riveting sleeve 100; as extrusion 200 slides relative to riveting sleeve 100, extrusion 200 drives the plurality of riveting heads 300 to expand outwardly to extrude pipe 001 and deform pipe 001 to effect riveting of pipe 001 with joint 002.

The riveting mechanism that this embodiment provided, when carrying out pipeline 001 and the riveting operation that connects 002, will rivet sleeve 100 fixed, then overlap the pipeline 001 cover that is equipped with to connect 002 and establish on riveting sleeve 100, set up a plurality of riveting heads 300 on riveting sleeve 100 and be located pipeline 001. Then, the pressing member is inserted into the riveting sleeve 100, and the pressing member is operated to slide relative to the riveting sleeve 100, so that the pressing member drives the plurality of riveting heads 300 to move radially outward of the riveting sleeve 100, the outer walls of the plurality of riveting heads 300 are all in contact with the inner wall of the pipe 001, and simultaneously the riveting heads 300 press the inner wall of the pipe 001, so that the part of the pipe 001 deforms radially outward to form a protrusion, so as to complete the riveting of the pipe 001 and the joint 002. In the riveting process, the external force of exerting on the extruded piece transmits for riveting sleeve 100, and riveting sleeve 100 is fixed for pipeline 001, and riveting sleeve 100 converts the axial force that the extruded piece received into the radial force that acts on a plurality of riveted joint 300 so that riveted joint 300 radial deformation, and the axial force that pipeline 001 received is little, and pipeline 001 is difficult damaged. Meanwhile, because the stress of the pipeline 001 is small, the pipeline 001 is more convenient to position, the structure of the positioning position of the pipeline 001 is simplified, and the manufacturing cost is reduced.

It should be noted that the riveting mechanism provided in this embodiment may be used for riveting the circular pipeline 001 and the joint 002, and may also be used for riveting the square pipeline 001 and the joint 002, and optionally, in this embodiment, the riveting of the circular pipeline 001 and the joint 002 is taken as an example for description.

It should be noted that the rivet joint 300 has elastic deformation capability, and after the riveting is completed, the external force applied to the rivet joint 300 is removed, so that the rivet joint 300 can be restored to the initial state under the self-elasticity, and the rivet joint is convenient to use next time. In other words, the riveting mechanism can be reused, and the cost is reduced.

Referring to fig. 2, optionally, the riveting sleeve 100 is a cylindrical sleeve, and the riveting sleeve 100 has a regular structure and is convenient to manufacture. Obviously, in other embodiments, the staking sleeve 100 may be a square barrel or the like.

Optionally, the rivet joint 300 is in a bar shape, the rivet joint 300 has an outer side surface and an inner side surface which are opposite to each other, the outer side surface is an arc surface, the arc surface of the outer side surface is located on an extension surface of a cylindrical surface determined by the outer peripheral surface of the riveting sleeve 100, in other words, the rivet joints 300 are arranged around the circumference of the riveting sleeve 100, the outer side surfaces of the rivet joints 300 are located on the same cylindrical surface, and the cylindrical surface is coplanar with the cylindrical surface of the riveting sleeve 100. The inner side of the rivet joint 300 is an arc-shaped surface, and the inner side of the rivet joint 300 and the axis of the riveting sleeve 100 form an included angle, and meanwhile, the distance between one end of the inner side connected with the riveting sleeve 100 and the axis of the riveting sleeve 100 is greater than the distance between the other end of the inner side and the axis of the riveting sleeve 100, in other words, one end of the inner side is connected with the riveting sleeve 100, and the other end of the inner side is inclined from outside to inside, so that the space enclosed by the plurality of rivet joints 300 is approximately in a conical hole shape, one port of the space enclosed by the plurality of rivet joints 300, which is far away from the riveting sleeve 100, is a necking end, and the inner diameter of the port is smaller than the inner diameter of an.

Further, the inner side surface does not protrude beyond the inner pipe wall of the caulking sleeve 100 in the radial direction of the caulking sleeve 100, and the caulking head 300 does not easily block the extrusion member 200 inserted from the caulking sleeve 100.

Optionally, a riveting protrusion 310 is disposed on the outer side surface of the rivet head 300, and the riveting protrusion 310 protrudes outward from the outer side surface of the rivet head 300 in the radial direction of the rivet head 300. The riveting boss 310 has two intersecting riveting surfaces 311 on the side facing away from the rivet head 300, and the intersection line of the two intersecting riveting surfaces 311 can contact the inner pipe wall of the pipe 001. When the pipe riveting head is used, the riveting convex parts 310 on the riveting heads 300 are in contact with the inner wall of the pipe 001, and the riveting convex parts 310 are in line contact with the inner wall of the pipe 001, so that the contact area is reduced, the force concentration is facilitated, and the deformation of the pipe 001 is facilitated.

In other embodiments, the side of the riveting projection 310 facing away from the riveting head 300 may be provided as an arc-shaped surface.

It should be noted that, the diameter of the cylindrical surface where the outer peripheral surfaces of the plurality of rivet joints 300 are located is designed according to the inner diameter of the pipeline 001 to be riveted, so as to ensure that the plurality of rivet joints 300 can be inserted into the pipeline 001 at the same time and the two are in sliding fit, optionally, the diameter of the cylindrical surface where the outer peripheral surfaces of the plurality of rivet joints 300 are equal to the inner diameter of the pipeline 001 or slightly smaller than the inner diameter of the pipeline 001, so that the plurality of rivet joints 300 can be inserted into the pipeline 001, and the rivet joints 300 can be in close contact with the inner pipe wall of the pipeline 001, so that the pipeline 001 is positioned, and the pipeline 001 is.

Optionally, the rivet joints 300 are uniformly arranged along the circumferential direction of the riveting sleeve 100 at intervals, and the number of the rivet joints 300 is set as required, which is not specifically described in this embodiment.

In other embodiments, the inner side surface of the rivet head 300 may not be an arc surface, the inner side surface of the rivet head 300 may be a plane, an included angle may be formed between the inner side surface and the axis of the riveting sleeve 100, and when the extrusion member 200 slides relative to the rivet head 300, the rivet head 300 may be driven to expand outward along the radial direction of the riveting sleeve 100.

In an embodiment, the outer side of the rivet head 300 has the same inclination as the inner side, so that the outer sides of the rivet heads 300 are formed in a conical shape to facilitate insertion into the pipe 001. And the riveting convex part 310 arranged on the outer side surface of the riveting head 300 is matched to realize the contact with the inner wall of the pipeline 001, so that the subsequent riveting fixation is convenient.

In this embodiment, the extrusion member 200 is a cylinder, and can cooperate with a plurality of riveting heads 300 simultaneously for driving a plurality of riveting heads 300 to expand radially outwards along the riveting sleeve 100, the end of the pipeline 001 is driven to deform outwards to form a protrusion after the riveting heads 300 expand, so as to realize the riveting of the pipeline 001 and the joint 002.

Optionally, the pressing member 200 has a guide portion 210, the guide portion 210 having an insertion end 110 for inserting the caulking sleeve 100 and a trailing end 120 opposite to the insertion end 110, the guide portion 210 having an outer diameter gradually increasing from the insertion end 110 toward the trailing end 120; when the pressing member 200 slides with respect to the caulking sleeve 100 and slides into the space surrounded by the plurality of caulking heads 300, the outer wall of the guide portion 210 simultaneously abuts against the inner wall of the plurality of caulking heads 300 to drive the plurality of caulking heads 300 to move outward in the radial direction of the caulking sleeve 100. Because the guide part 210 sets up to the toper structure with the space looks adaptation that a plurality of riveting heads 300 enclose, when guide part 210 inserted riveting sleeve 100 and was close to a plurality of riveting heads 300, the outer peripheral face of guide part 210 simultaneously with the medial surface contact of a plurality of riveting heads 300, and at the gliding whole in-process of guide part 210, the outer peripheral face of guide part 210 remains the medial surface butt with riveting heads 300 throughout, make a plurality of riveting heads 300 all receive the power of outside deformation, and the difficult change in position of guide part 210, slide along the axis of riveting sleeve 100 throughout, thereby make a plurality of riveting heads 300 evenly deformed, finally realize pipeline 001 evenly deformed, improve riveting quality.

Optionally, a space for inserting the extrusion member 200 is defined by the plurality of rivet heads 300, the outer diameter of the insertion end 110 is not greater than the inner diameter of the end of the space far away from the riveting sleeve 100, and when the guide portion 210 extends into the space defined by the plurality of rivet heads 300, the outer circumferential surface of the guide portion 210 can be ensured to be in complete contact with the inner side surface of each rivet head 300 in the deformation process, so that the rivet heads 300 deform more uniformly.

Optionally, the pressing member 200 further includes a pressing portion connected to the guide portion 210, and an outer diameter of the pressing portion is not greater than an outer diameter of the tail end 120 of the guide portion 210, so that the pressing member 200 is convenient to operate, and the movement of the guide portion 210 relative to the riveting sleeve 100 is not easily affected.

It should be noted that, the extrusion member 200 may be set to be a cylindrical structure with an equal diameter, when the extrusion member 200 is inserted into the space surrounded by the rivet joints 300, the outer edge of the front end surface of the extrusion member 200 is simultaneously contacted with the inner side surfaces of the rivet joints 300, and since the inner side surfaces are inclined relative to the axis of the riveting sleeve 100, the extrusion member 200 can also drive the rivet joints 300 to expand outward when moving from the open end to the reduced end.

In other embodiments, the riveting mechanism further comprises a worktable on which the riveting sleeve 100 is fixed and a driving member disposed on the worktable, the driving member being connected with the extrusion member 200 for driving the extrusion member 200 to reciprocate linearly relative to the riveting sleeve 100. Alternatively, the driving member may be an electric motor, a hydraulic or pneumatic cylinder, or the like.

It should be noted that the present embodiment provides a riveting mechanism, where riveting sleeve 100 is used in conjunction with extrusion 200, both of which may be manufactured, used and sold separately.

The riveting mechanism that this embodiment provided, with connecting the 002 riveting on pipeline 001, be provided with the spacing convex part 003 of annular on the pipeline 001, connect 002 establish the pot head from the cover of pipeline 001 outside pipeline 001 and can support with the spacing convex part 003 of annular, the spacing convex part 003 of annular limits connects 002 and establishes the end slip along keeping away from the cover, then, establish pipeline 001 cover outside a plurality of riveting heads 300, a plurality of riveting convex parts 310 on a plurality of riveting heads 300 support with the inner wall of pipeline 001, fix riveting sleeve 100, then insert riveting sleeve 100 with extruded article 200, make extruded article 200 slide along the direction that is close to riveting head 300, the pipe wall of the cover end that riveting head 300 driven pipeline 001 established forms the arch along radial outside deformation, connect 002 by the restriction between spacing convex part 003 of annular and arch, accomplish the riveting of pipeline 001 and joint 002.

The riveting mechanism that this embodiment provided, simple structure is reasonable, and pipeline 001 and joint 002 riveting in-process, the axial force that pipeline 001 received is little, and difficult fracture damages, riveting quality is high.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a riveting mechanism for riveting the pipeline and establishing the joint outside the pipeline, its characterized in that, riveting mechanism includes:

the riveting sleeve is provided with a plurality of riveting heads, the riveting heads protrude out of one end of the riveting sleeve along the axial direction of the riveting sleeve, the riveting heads are distributed at intervals along the circumferential direction of the riveting sleeve, and the riveting heads are used for being inserted into the pipeline; the extrusion piece is inserted into the riveting sleeve and is in sliding fit with the riveting sleeve; the extrusion drives the rivet heads to expand outwardly to squeeze and deform the pipe as the extrusion slides relative to the riveting sleeve, thereby effecting riveting of the pipe with the heads.

2. The riveting mechanism of claim 1, wherein:

an included angle is formed between the inner wall of each riveting head and the central axis of the riveting sleeve, and the distance between one end of the inner wall of each riveting head, which is connected with the riveting sleeve, and the central axis of the riveting sleeve is larger than the distance between the other end of the inner wall of each riveting head and the central axis of the riveting sleeve; when the pressing piece slides relative to the riveting sleeve, the pressing piece is abutted with the inner wall of the riveting head to drive the riveting head to move outwards along the radial direction of the riveting sleeve.

3. The riveting mechanism of claim 1, wherein:

the outer walls of the plurality of riveting heads are positioned on the same cylindrical surface.

4. The riveting mechanism of claim 1, wherein:

the outer wall of the rivet joint is provided with a riveting convex part, and when the rivet joint is inserted into the pipeline, the riveting convex part is abutted against the inner wall of the pipeline.

5. The riveting mechanism of claim 4, wherein:

the riveting convex part is provided with two riveting surfaces opposite to the peripheral surface of the riveting head, the two riveting surfaces are connected and have an included angle, and the connecting position of the two riveting surfaces is used for being abutted against the inner wall of the pipeline.

6. The riveting mechanism of claim 1, wherein:

the pressing piece is provided with a guide part, the guide part is provided with an insertion end for inserting the riveting sleeve and a tail end opposite to the insertion end, and the outer diameter of the guide part is gradually increased from the insertion end to the tail end; when the pressing member slides relative to the riveting sleeve, the outer wall of the guide part is abutted with the inner wall of the riveting head to drive the riveting head to move outwards along the radial direction of the riveting sleeve.

7. The riveting mechanism of claim 6, wherein:

the riveting heads enclose a space for the extrusion part to be inserted, and the outer diameter of the insertion end is not larger than the inner diameter of one end of the space far away from the riveting sleeve.

8. The riveting mechanism of claim 6, wherein:

the extruded piece further comprises a pressing part connected with the guide part, and the outer diameter of the pressing part is not larger than that of the tail end of the guide part.

9. The riveting mechanism of claim 1, wherein:

riveting mechanism still includes workstation and driving piece, rivet the sleeve and the driving piece all set up in on the workstation, the driving piece is used for the drive the extruded piece for rivet the sleeve and slide.

10. The utility model provides a riveting sleeve for with the extruded article cooperation, establish with riveting pipeline and cover the outer joint of pipeline, its characterized in that:

the riveting sleeve is provided with a plurality of riveting heads, the riveting heads protrude out of one end of the riveting sleeve along the axial direction of the riveting sleeve, the riveting heads are arranged at intervals along the circumferential direction of the riveting sleeve, and the riveting heads are used for being inserted into the pipeline; the extrusion piece is inserted into the riveting sleeve and is in sliding fit with the riveting sleeve; the extrusion drives the rivet heads to expand outwardly to squeeze and deform the pipe as the extrusion slides relative to the riveting sleeve, thereby effecting riveting of the pipe with the heads.

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